00343nam a22001457a 4500020001800000082001900018100002700037245002300064250000800087260003100095300001000126700002100136700002100157700001900178  a9780849312885  a572.86 072bWU  aWu, William [et.al...]  aGene Biotechnology  a2nd  aNew YorkbCRC Press c2004  a523p;  aWelsh, Michael J  aKaufman, Peter B  aZhang, Helen H